FiQ. 175. — Skeleton of Fowl. 



A-B, cervical vertebrse ; 1, spinous process of third 

 vertebra ; 2, Inferior ridge on same ; 3, styloid process ; 

 4, vertebral foramen ; B-C, dorsal vertebrse ; 6, spinous 

 process of first; 7, crest formed by union of other 

 spinous processes ; D-E, coccygeal vertebrse ; J*", G, 

 head ; 8, interorbital septum ; 9, interorbital foramen ; 

 10, premaxillary bone; 10', anterior nares ; 11, man- 

 dible ; 12, quadrate ; 13, maxilla ; 14, keel of sternum 

 (iJ); 15, episternum ; 16, posterior lateral process ; 17, 

 oblique lateral process ; 18, membrane closing internal 

 notch; 19, membrane of external notch; /, ribs; 20, 

 posterior process ; J, ribs ; K, scax'ula ; L, coracoid ; 

 M, furcula ; m, m, its branches ; N, humerus ; 0, ulna ; 

 0, radius ; P, P', carpus ; Q, Q\ metacarpus ; R, first 

 phalanx of wing digits ; r, second ditto ; K, thumb ; S, 

 ilium ; S\ ischium ; S", pubes ; 21, sciatic foramen ; 22, 

 foramen obturatum ; T, femur ; U, patella ; V, tibia ; 

 X, fibula ; F, metatarsus ; y, intertarsus or heel-joint ; 

 28, hypotarsus ; 24, process supporting the spur ; z, 

 digitSn (Chauveau.) 



